Ditch network maintenance in peat-dominated boreal forests : ditch network maintenance in peat-dominated boreal forests
|Author:||Nieminen, Mika1; Piirainen, Sirpa1; Sikström, Ulf2;|
1Natural Resources Institute, Finland
2Skogforsk, Uppsala, Sweden
3Department of Aquatic Sciences and Assessment, SLU, Uppsala
4Water Resources and Environmental Engineering Research Unit, University of Oulu
|Persistent link:|| http://urn.fi/urn:nbn:fi-fe201804186602
|Publish Date:|| 2019-03-27
The objective of this study was to evaluate the potential of different water management options to mitigate sediment and nutrient exports from ditch network maintenance (DNM) areas in boreal peatland forests. Available literature was reviewed, past data reanalyzed, effects of drainage intensity modeled, and major research gaps identified. The results indicate that excess downstream loads may be difficult to prevent. Water protection structures constructed to capture eroded matter are either inefficient (sedimentation ponds) or difficult to apply (wetland buffers). It may be more efficient to decrease erosion, either by limiting peak water velocity (dam structures) or by adjusting ditch depth and spacing to enable satisfactory drainage without exposing the mineral soil below peat. Future research should be directed towards the effects of ditch breaks and adjusted ditch depth and spacing in managing water quality in DNM areas.
Ambio. A journal of the human environment
|Type of Publication:||
A2 Review article in a scientific journal
|Field of Science:||
218 Environmental engineering
© Royal Swedish Academy of Sciences 2018.